Box-strapping machine.



No. 666,232. Patented Jan. l5, l90l. F. F. LEVY &. F. A. LITTLE.

BOXISTRAPPING MACHINE.

(Application filed July 27, 1900.)

(No Model.)

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ATTORNEY m: noRms PETERS cc PHDTO-LITHQ, WASNINGTON, n. c.

STATES UNETE 2|:

ATENT OFFICE.

FELIX F. LEVY AND FRANKLIN A. LITTLE, OF SAN FRANCISCO, CALIFORNIA; SAIDLITTLE ASSIGNOR TO SAID LEVY AND PRENTISS CROWELL, OF

SAME PLACE.

BOX-STRAPPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 666,232, dated January15, 1901.

Application filed July 27,1900. Serial No. 25,061. (No model.)

To aZZ whom it may concern:

Be it known that we, FELIX F. LEVY and FRANKLIN A. LITTLE, citizens ofthe United States, residing at San Francisco, in the county of SanFrancisco and State of California, have invented certain new and usefulImprovements in Box-Strapping Machines, of which the following is aspecification.

Our invention relates to a machine for strapping boxes or packing-caseswith strap iron, the object of our invention being to provide a deviceof this character by means of which cases may be strapped moreexpeditiously and with less labor than heretofore and in which the strapshall be applied very tightly.

Our invention therefore resides in the novel construction, combination,and arrangement of parts for the above ends hereinafter fully specified,and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of themachine, showing the mode of operation thereof in strapping apacking-case. Fig. 2 is a side view of the lever of the machine and aportion of the carriage on a larger scale, the bed-plate being shown insection. Fig. 3 is a front view of said lever. Fig. 4 is a plan view ofthe machine, and Fig. 5 is a section on the line A A of Fig. 2.

Referring to the drawings, 1 represents any suitable bed-plate,preferably secured firmly to the floor by means of screws, as shown at2, or otherwise. The long sides of said bedplate 1 are protected attheir edges by guideplates 3, and upon said plates are movably supportedcarriages 4, the ends of which are bent over to form hooks 5 around saidguides. Upon each carriage are mounted stanchions 6, joined at the topand perforated, as at 7,

end thereof, where it passes around a roller 13, supported between arms14 of a lever 15, pivoted at 16 between extensions 17 of the carriage.The ends of the arms 14 are pref erably beveled or flared, as shown at18, to center the strap-iron upon the roller. The strap-iron passes fromthe roller up along the under side of the lever 15 and over a pin 19,secured in extensions 20 from the upper end of said lever.

A suitable length of strap-iron having been unwound from the reel, theoperator nails the free end of the strap-iron to the upper side of thebox or case tobe strapped near its farther edge, and then presses thefoot firmly upon the upper surface of the lever 15, preferably formedwith a broad foot-plate 21. The downward movement of the lever bringsthe roller 13 into proximity with the upper surface of a flat spring 22,secured at 23 on the upper side of the carriage and projecting therefrombetween the extensions 17, and the strap-iron is thereby clamped betweensaid roller and the upper surface of said spring, so that the unwindingof the strap-iron from the reel is at this point arrested. The continueddownward movement of the lever 15 has the effect of imparting a powerfultension to the wire and draws it down very tight upon the box or case.The operator now nails down the strap-iron, which has been laid downtight upon the upper side of the box, and then releases said lever, andrepeats the operation at the other end of the box with the wire from thesecond reel. He then turns the box over and repeats these operationsupon'the next side, and so on for the other sides of the box.

For adjusting the distance of the reels from each other all that isnecessary is to push the carriages along the guides with the foot, asthey will remain in any place to which they have been thus shifted.

We claim 1. In a case-strapping machine, the combination of a source ofsupply of strap-iron, a lever pivoted to swing downwardly, means forguiding said strap-iron along said lever, and a clamping device broughtinto operation by said lever at a predetermined point in its descent,and positively clamping said strap-iron against further movement alongsaid lever from its pivot, substantially as described.

2. In a case-strapping machine, the com-..,

bination of a source of supply of strap-iron, a lever pivoted to swingdownwardly, means for guiding the strap-iron from said source along saidlever, and a clamp brought into operation by said lever at apredetermined point in its descent, and positively clamping saidstrap-iron against further movement along said lever from its pivot,said lever be ing then permitted further downward movement to tightenthe strap-iron extending beyond said clamp, substantially as described.

3. In a case-strapping machine, the comnation of a source of supply ofstrap-iron, a lever, means for guiding the strap-iron from said sourceof supply along said lever, and a clamp at the pivotal end of said leverarranged to clamp said strap-iron at a predetermined point in thedescent of the lever and prevent forward movement thereof, substantiallyas described.

4. In a case-strapping machine, the combination of a downwardly-swinginglever, a support for a source of supply of strap-iron, means for guidingthe strap-iron from said support along said lever to the free endthereof, a roller carried by said lever, a fixed te, between which plateand the roller the strap-iron passes, said strap-iron being clampedbetween the plate and roller when the lever has been swung downwardlythrough a predetermined distance, substantially as described.

5. In a case-strapping machine, the combination of a suitable support,guides thereon, carriages sliding on said guides, a reel of wire carriedby each carriage, a lever pivotally mounted at its lower end upon eachcarriage, means for guiding the wire coming from the reel along thelever, and a clamp arranged to be actuated by said leverin its downward.

movement to arrest the further withdrawal of 'said strap-iron,substantially as described.

In witness whereof We have hereunto set our hands in the presence of twosubscribing witnesses.

FELIX F. LEVY. F. A. LITTLE.

Witnesses:

FRANCIS M. WRIGHT, Z. A. DANIELS.

